Pump-operating mechanism



T. R. MINERT. PUMP OPERATING MECHANISM.

2 SHEETS-SHEET l.

Patented June 22,- 1920.

APPUCATION FILED FEB. 24, 1919.

INVENTOR 0 do nelfwy mum? BY ATTORNEY.

fZg/YgSSIES:

T. R. MINERT.

PUMP OPERATING MECHANISM.

APPLICATION FILED FEB. 24. 1919.

Patented June 22, 1920.

2 SHEETS-SHEET 2.

INVENTOR. eai'oreaa m'n en 1-,

ATTORNEY.

amount of energy used'for raising a UNITED STATES PATENT OFFICE; I

THEODORE RAY MINERT, F MILWAUKEE, WISCONSIN.

VIIUMP-OPERATING MECHANISM.

Specification of Letters Patent. Patented J ne 22" 192( Application filed February 24,1919. Serial No. 278,829.

To all whom it may concern 1 Be it known that I, THEODORE R. MINERT, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a new and useful Improvement in Pump-Operating Mechanism, of which the following is a specification.

The object of this invention is the production of a simple and inexpensive pump head which will pump water orother liquid from deep wells or compress or exhaust air or gas in substantially a continuous stream. A further object is the production of an assemblage of parts which is thoroughly lubricated and less liable to get out of order than with pump heads heretofore produced.

A further object :is to evenly distribute the pumping force onthe parts of the head so that there is no side draft which'would cramp the mechanism and increase the given amount of liquid. \Vith these and other objects in view, my

invention comprises the features of construct1on and combinatlon of parts hereinafter claimed; 1 I

In the accompanying drawings forming part of this specification, Fi ure 1 is a side elevation of my invention ig. Qis a rear elevation; Fig. 3 is a front elevation; Fig. l is a plan view; Fig. 5 is a plan of the more particularly described and .main driving gears and cranks; Fi g. (iisa plan of the lower cross head; Fig. 7 15 an elevation of a. detail of part oftlieoutside well rod, the bearing'roller being shown ina plan of the roller bearsection; Fig. 8 is shaft; Fig. 9 1s fl SBCUOH ing on the crank taken on the line an elevation showing a different method of arranging the bell cranks for medium duty pumps; Fig. 11 is a plan of the gear and 'crank for the construction shown in*Fig.

; Fig. 12 1s a side BlGVdillOll'Of thecrank I arm of an alternative constructiom the main head shaft and pin connection being shown in section; Figs. 13 and 14 are deta l views of WlIlCl mill connectlons for use in connection either with the preferred'oralternative construction; F1gs.115, 16 and 17 are elevations of another alternative construction operating a farm pump having two separate cylinders; and Fig. 18 is a section taken on the line -15 of Fig. 15. i

the drawings let 20 and 21 indicate a palr of outside bell cranks which are journaled to rotate at their angles on a shaft 23 which is secured in the upright sides 24 and 25 of a supporting frame 26. These bell cranks are substantially similar in size and construction and the forward ends of their upper arms are attached by pivots 27 to outside connecting rods 28 and 29 and their lower ends connected to the free ends of the crank members 30of the unitary pair of gears 31 and connecting crank member 32. The connecting rods 28 and 29 are secured to the lowercross head 33,- which is slidablymounted to move vertically on the guide rods 34 and connected by the bearing 53 to the upper endof the outside well rod 36 which is connected at the bottom to an outside plunger in' the well cylinder or cas- 'ing37.

The shaft members 38 are co-axialwith the axes'of the gears 31 and are journaled in'the side members 24: and 25 of the frame 26 with the gears arranged between said sides. Disposed above said gears and journaled in said sides-is a main driveshaft 39 which carries a main drive pulley'40 and a pair of pinions 41, the teeth of which mesh with the teeth of said gears to revolve the crank elements 30. The lower arms of the their connected plungers, simultaneously, by

"acombined sliding and rolling movement between the bell cranks and the rotary driv- .ing crank elements. This operation is smooth and noiseless with little friction.

' Arranged between the gears31 and pinions 41 is a center bell crank 42 which also is iournaled at its angle freely on the shaft The forwardupper free arm of this bell crank is connected by the link 43 to the cross head 35. which in turn is connected to the center connecting rod 22, said cross head sliding vertically on the pair of guide rods 34:. The guide rods are supported in alinement with the center of the well ri idly in vertical position by the base 48 of the frame and the transverse support 47 which is carried by the side members 24 and 25. The base 48 forms a cover and is bolted to the well casing 37.

The upper cross head 35 is anchored to the upper end of the inside well rod 22 which slides downwardly and freely through the outside well rod 36 in the lower cross head 33 and well casing. The outside well rod also slides freely through a gland 2L9 placed in the cover and supporting element -18.

The lower arm of the center bell crank is reciprocated by a roller bearing 50 also similar to the construction shown in Iligs. 8 and 9, which is journaled on the crank member 32 and engages over a bearing plate 51 as with bearings 45 and plates 44:. By

this construction the center bell crank 42 and rod 22 are re'ciprocated by a combined turning and sliding movement of the crank 32 and its anti-friction bearing 50.

Secured upon the frame below the gears so that the latter will dip into oil contained therein to be lubricated thereby, is an oil pan 52.

The cranks produce an overlapping stroke and therefore assist in pumping a continuous stream, due to the fact that two tangents drawn from point 23 to opposite sides of the crank circle divide the crank circle into two unequal portions, so that the stroke in one direction is produced by more than a half revolution of the crank pin, and in the opposite direction by less than a half revolution of the crank pin. As this is true of each of the diametrically disposed crank pins, the two actuated pistons overlap at the ends of their respective strokes. The degrees of overlapping may be varied by varying the diameter of the crank circle, or by varying the distance of the crank shaft from shaft 23. During the operation of the pump head the bearing rollers roll 'on the finished bearing bars stand 51 and reduce friction to a minimum. As a safeguard, the bars are held in contact with the rollers by their yokes. The cross head 33 is shown split (see Fig. 6) being formed with a bearing cap 53 removably securedby .bolts 54. By removing said bolts and cap the outside well rod 36 is released and the pump head may be pushed back away from over the well after the inside pump rod is also disconnected. When desired, the bell cranks can beconnected to a 'wind mill for operation by a con-- necting rod 55 sliding in a guide 56. The center unit or upper cross head can. also be connected to a wind mill reciprocating shaft such as 55 to actuate the inner pump elesize niachines.

keyed to shaft 59 at 60 and G1 and in this case the shaft 59 will have to rotate in the frame' The other parts are substantially the same as in the construction shown in Fig. 1. The crank shaft and gear '71 are of simple type. In Figs 15 to 1.8 inclusive the construction is adapted for small wells, using two separate and distinct cylinders and pump rods. Two bell cranks 62 and 63 operated by a single crank shaft 65 are employed, the crank members being spaced at 180 degrees as in the preferred construe tion. The cranks have sliding bearings (36 which permit the revolution of the crank shaft to reciprocate the bell cranks and connected pump shafts 6S and 69.

By this arrangement and construction, the use of connecting rods guide rods and cross heads areobviated since the plunger rods do not work in stuiling boxes at the top of the well and the slight deviation in alinement does not materially decrease efficiency in operation.

Among the advantages attained by my in: vention are: a steady stream of water or other liquid is produced as the pump has no dead center at the end of the stroke and one plunger is always moving upward; the strain between the two plunger rods is carried direct through one crank shaft or gear and crank, thus avoiding excessive wear and back lash? of the pinions as in prior devices; the pump is compact, requires less space than other pumps and it low so that strains are reduced; itrequires less material to build; it is more eiiicient and quiet in operation. the roller bearings and moving parts being saturated with oil continuously; the loads are evenly distril'iuted to avoid sidestrains; and the pump head. can be easily disconnected and removed from the pump rods.

In accordance with the patent statutes I have described the principles of operation of my invention together with the apparatus which I nowconsider to be the best embodiment thereof but I desire to have it understood that the construction shown is only illustrative and that the invention can be carried out by other means and applied to uses other than those'set forth within the scope of the following claims.

Having described my invention, what I claim is new and desire to secure by Letters Patent is:

l.Pumping apparatus, comprising, in combination, a pair of plunger pump shafts to be reciprocated successively. a crank shaft journaled to revolve, having a pair of bell cranks arranged on an axis to swing and reciprocate successively, one arm of each crank being linked to one of said pump shafts and. the remaining arms bearing on saidcrank at'points diametrically opposite,

said bell cranks and crank pins being arranged so that two tangei'its d awn from said axis to opposite sides of the crank circle, divide the crank circle into substan tially two unequal portions, whereby the stroke of each pump shaft in one direction is produced by more thana half revolution of the crank shaft, and in the opposite direction by less than a half revolution of the crank shaft, to pump a continuous stream.

2. Pumping apparatus, comprising, in combination, a pair of plunger pump shafts to be reciprocated successively, a crank shaft journaled to revolve having a pair of diametrically arranged crank pins, a plurality of rocking bell cranks coaxially arranged i on an axis above said crank shaft to under swing and reciprocate successively, one arm of each crank being linked to one of said pump shafts and the remaining arms bearing on said crank pins, said bell cranks and crank pins being arranged so that two tangents drawn from said axis to opposit sides of the crank circle, divide the crank circle into substantially two unequal portions, whereby the stroke of each pump shaft in one direction is produced. by more than half revolution of the crank shaft, and in the opposite direction by less than a half revolution of the crank shaft, to pump a continuous stream.

3. Pumping apparatus, comprising, in combination, a pair of plunger pump shafts to be reciprocated successively, a crank shaft journaled to revolve having a pair of diametrically arranged crank pins, a plurality of rocking bell cranks coaxially arranged to swing and reciprocate successively, one arm of each crank being linked to one of said pump shafts and the remaining arms being oined on their backs to said crank pins by antifriction sliding pivot connections, said bellcranks and crank pins being arranged so that two tangents drawn from said axis to opposite sides of the crank circle, divide the crank circle into substan tially two unequal portions, whereby the stroke of each pump shaft in one direction is produced by more than a half revolution of the crank shaft, and in the opposite direction by less than a half revolution of the crank shaft, to pump a continuous stream.

4;. Pumping apparatus, comprising, in combination, a pair of plunger pump shafts to be reciprocated successively and substantially vertically, a substantially horizontal journaled crank shaft having a pair of diametrically arranged crank pins, a plurality of rocking bell cranks coaxially arranged on a substantially horizontal axis above said crank shaft to under swing and reciprocate successively, one arm of each crank being --linkedto=one of said pump shafts and the remaining arms being ournaled to said crank pins by antifriction sliding pivot connections, means for driving said crank shaft, and a pan arranged to hold lubricant into which said driving means and bell cranks are adapted to dip to lubricate mov ing connections, said bell cranks and crank pins being arranged so that two tangents drawn from said axis to opposite sides of the crank circle, divide the crank circle into substantially two unequal portions, whereby the stroke of each pump shaft in one direction is produced by more than a half revolution of the crank shaft, and in the opposite direction by less thana half revolution of the crank shaft, to pump a continuous'stream.

5. Pumping apparatus, comprising, in combination, a pair of plunger pump shafts to be reciprocated successively, a horizontal crank shaft ournaled to revolve having diametrically arranged crank pins, three rocking bell cranks hung from an axis above said crank shaft and adapted to swing two in one direction together and the other in the opposite direction between said pair, a, head frame connected to one of said shafts, one arm of said single bell crank being connected to the other pump shaft, one arm of each. of the pair of bell cranks beingvcoupled to said head frame and the remaining arms of all of said bell cranks being movably joined to said crank pins at points diametrically opposite, said bell cranks and crank pins being arranged so that two tangents drawn from said axis to opposite sides of the crank circle, divide the crank circle into substantially two unequal portions,

whereby the stroke of each pump shaft in one direction is produced by more than a half revolution of the crank shaft, and in the opposite direction by less than a half revolution of the crank shaft, to pump a continuous stream.

6. Pumping apparatus, comprising, in combination, a frame, a pair of plunger pump shafts disposed adjacent to said frame to be reciprocated successively, a crank shaft journaled to revolve in said frame having diametrically arranged crank pins, a plurality of rocking bell cranks coaxiallyvarranged to swing from an axis above said shaft on said frame, gearing journaled on said frame for driving said shaft, a head frame coupling a pair of said bell cranks to one of said pump shafts and a link coupling the remaining bell crank to the remaining pump shaft, said single bell crank being arranged between the pair of bell cranks and all of said bell cranks being slidably and pivotally joined to said crank pins, the points of said connections by said single bell crank and pair of bell cranks be- 7 ing diametrically opposite, said bell cranks and crank pins being arranged so that two tangents drmvn from said axis to opposite sides of the crank circle, divide the crank circle into substantially two unequal portions whereby the stroke of each pump shaft in one direction is produced by more than a half revolution of the crank shaft, 10 and in the opposite direction by less than a half revolution of the crank shaft, to pump a continuous stream.

In testimony whereof I have signed my name to this specification.

THEODORE RAY MINERT. 

